Today we are looking at the present perfect, and the present perfect continuous.

今天，我们要学习现在完成时和现在完成进行时。

Those are the differences between the present perfect and the present perfect continuous.

这些是现在完成时和现在完成进行时之间的差异。

The present perfect continuous has a use that is the same as the present perfect simple.

现在完成进行时有个用法，这个用法和现在完成时是一样的。

The present perfect simple and continuous tenses.

现在完成时和现在完成进行时。

The present perfect verb here is " have lost" .

这里表示现在完成式的动词是" have lost" 。

Answer this conditional and this present perfect question.

回答这个条件问句和这个现在完成时问句。

Mistake number five, past simple or present perfect.

第五类错误，一般过去时还是现在完成时。

I've used the present perfect tense here.

我在这里用了现在完成时。

Probably here, we would use the present perfect, right?

大概在这里，我们会用现在完成时。

It's the present perfect and you can't use 'when' with the past simple and the present perfect.

这是现在完成时，“when”和一般过去时和现在完成时不能一起使用。